A Patient with Lung Squamous Cell Carcinoma Presenting with Severe Cardiac Dysfunction Similar to Dilated Cardiomyopathy with Left Bundle Branch Block Induced by Myocardial Metastasis

Hirokazu Ogino; Naoki Nishimura; Atsushi Kitamura; Genta Ishikawa; Kohei Okafuji; Yutaka Tomishima; Torahiko Jinta; Masahiro Yamazoe; Yang Yang; Naohiko Chohnabayashi

doi:10.2169/internalmedicine.53.2616

CASE REPORTS

A Patient with Lung Squamous Cell Carcinoma Presenting with Severe Cardiac Dysfunction Similar to Dilated Cardiomyopathy with Left Bundle Branch Block Induced by Myocardial Metastasis

Hirokazu Ogino, Naoki Nishimura, Atsushi Kitamura, Genta Ishikawa, Kohei Okafuji, Yutaka Tomishima, Torahiko Jinta, Masahiro Yamazoe, Yang Yang, Naohiko Chohnabayashi

Author information

Hirokazu Ogino
Division of Pulmonary Medicine, St. Luke's Internal Hospital, Japan
Naoki Nishimura
Division of Pulmonary Medicine, St. Luke's Internal Hospital, Japan
Atsushi Kitamura
Division of Pulmonary Medicine, St. Luke's Internal Hospital, Japan
Genta Ishikawa
Division of Pulmonary Medicine, St. Luke's Internal Hospital, Japan
Kohei Okafuji
Division of Pulmonary Medicine, St. Luke's Internal Hospital, Japan
Yutaka Tomishima
Division of Pulmonary Medicine, St. Luke's Internal Hospital, Japan
Torahiko Jinta
Division of Pulmonary Medicine, St. Luke's Internal Hospital, Japan
Masahiro Yamazoe
Cardiovascular Center, St. Luke's Internal Hospital, Japan
Yang Yang
Department of Pathology, St. Luke's Internal Hospital, Japan
Naohiko Chohnabayashi
Division of Pulmonary Medicine, St. Luke's Internal Hospital, Japan

Keywords: lung cancer, squamous cell carcinoma, myocardial metastasis, left bundle branch block, left cardiac dysfunction

JOURNAL OPEN ACCESS

2014 Volume 53 Issue 20 Pages 2353-2357

DOI https://doi.org/10.2169/internalmedicine.53.2616

Details

Abstract

A patient with severe cardiac dysfunction similar to dilated cardiomyopathy expired because of lung squamous cell carcinoma. He was admitted with respiratory failure and was diagnosed with congestive heart failure due to dilated cardiomyopathy based on the chest X-ray, electrocardiography, echocardiography, and coronary angiography. Chest computed tomography showed a mass shadow in the right lower lobe, and the patient was diagnosed with lung squamous cell carcinoma by bronchoscopy. The patient expired, and the autopsy revealed that a myocardial metastasis disrupted the cardiac-conduction system without dilated cardiomyopathy in myocytes. Left bundle branch block caused by myocardial metastasis presumably induced left cardiac dysfunction.

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